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Title
Japanese: 
English:Sediment resuspension and its relation to flood pulse 
Author
Japanese: UK Sovannara, Siev Sokly, 佐藤 路鷹, Rajendra Khanal, Ty Sok, Sive Thea, Try Sophal, Chantha Oeurng, 吉村 千洋.  
English: Sovannara Uk, Sokly Siev, Sato Michitaka, Rajendra Khanal, Ty Sok, Sive Thea, Sophal Try, Chantha Oeurng, Yoshimura Chihiro.  
Language English 
Journal/Book name
Japanese: 
English:Water and Life in Tonle Sap Lake 
Volume, Number, Page         pp. 177–186
Published date June 25, 2022 
Publisher
Japanese: 
English:Springer Singapore 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://link.springer.com/chapter/10.1007/978-981-16-6632-2_19
 
DOI https://doi.org/10.1007/978-981-16-6632-2_19
Abstract Sediment resuspension in Tonle Sap Lake (TSL) occurs predominantly during the period from March to June when the lake is shallow. According to our survey in 2016–2017, the average resuspension rate ± standard error in the whole lake was 115 ± 66 g/m2/day in September, 93 ± 128 g/m2/day in December, 260 ± 246 g/m2/day in March, and 348 ± 227 g/m2/day in June. Resuspension rates in the low-water period (i.e., March and June) had a positive correlation with the concentration of total suspended solids (r = 0.45, p < 0.01). These results indicate that sediment in TSL and its floodplain is a major source of suspended solids during the low-water period. The resuspension rate is reduced by floodplain vegetation to approximately one-third of that in the open water of TSL. Besides water level and vegetation, several factors such as the dynamic ratio, wind, human activity, and aquatic fauna affect resuspension, and their relative importance varies with the water level. Overall, the flood pulse substantially influences sediment dynamics in TSL, especially resuspension, as a distinct seasonal process.

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